CVE-2017-5636: Apache Nifi

Critical severity, CVSS 9.8. EPSS: 3.6% chance of exploitation in the next 30 days.

In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.

Affected products

• Apache Nifi: version 0.7.0 only; version 0.7.1 only; version 1.1.0 only; version 1.1.1 only

Published 2017-10-19. Last modified 2026-06-17.